Ontario's provincial utility says power has been restored to more than half a million customers four days after an ice storm first moved into the region, but that some hard-hit areas may remain without it until the end of the week.

Burying electrical wiring is more common in dense urban areas such as Toronto, but that doesn't mean they're immune to weather-related outages.

Over 218,000 Ontario homes are in the dark as widespread blackouts impact the province amid a brutal ice storm this weekend, according to Hydro